Never read the books, but I read this.

Quote:
Geraci becomes a boxer in his teens, eventually becoming a heavyweight champion under the moniker "Ace Geraci".


Winegartner living out some creepy fantasy, egomania behavior.

Quote:
Tom Hagen trusts him [Momo Barone] enough to give him the job of killing a man who stole his watch.


Not believable.

Personally I was deterred from reading the books when I discovered the main character is some guy we've never heard of from the series.